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Delta ESR-48/56CF Telecom Switch-Mode Rectifier Module 48V 56A 3000W Official Studio Photo 3
DeltaModel: Delta ESR-48/56CF

Delta ESR-48/56CF Telecom Switch-Mode Rectifier Module (48V 56A 3000W)

The Delta ESR-48/56CF is an industrial-grade, hot-swappable switch-mode telecommunication rectifier module designed with an advanced high-frequency soft-switching topology and active PFC, engineered to convert a wide AC input range (88V to 300V AC) into a stable, regulated -48V DC output delivering up to 56A (3000W) with outstanding reliability.

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Rated Output Power
3000W Rated Output Power
DC Output Voltage
-48VDC (-42V ~ -58V)
Rated Output Current
56A Robust Constant Current Output
Power Conversion Efficiency
≥ 94%
AC Input Voltage Range
88V AC ~ 300V AC (Ultra-Wide AC Grid Tolerance)
Cooling Method
Built-in Smart Speed Controlled Exhaust Fan

What this product is

What this product is

A 1U compact plug-in power conversion module combining active power factor correction (PFC) with an isolated DC-DC resonant topology, equipped with an industrial-grade blind-mate rear edge connector for both AC/DC power routing and digital monitoring buses.

What problem it solves

Mitigates power outages and system drops caused by fluctuating, unstable grid voltages in remote environments, eliminates heat dissipation bottlenecks in compact outdoor enclosures, and provides uninterrupted system expansion via active autonomous load sharing.

Who and where it is for

Telecom wireless cellular sites (4G/5G), optical network terminals, central switching centers, outdoor multi-service integrated cabinets, utility control systems, and enterprise -48V DC power distribution racks.

Core advantages

  • Ultra-wide input window (88V AC to 300V AC) delivering superior immunity against severe grid sags and surges
  • High power density with 3000W / 56A output and high efficiency (≥94%) reducing total operating power loss
  • True hot-swap capability and active bus current sharing (<5% unbalance) for seamless modular scaling
  • Robust operating range from -40°C to +70°C supported by intelligent speed-regulated forced-air fan cooling

Technical specifications

Key specificationsValue
Rated Output Power3000W Rated Output Power
DC Output Voltage-48VDC (-42V ~ -58V)
Rated Output Current56A Robust Constant Current Output
AC Input Voltage Range88V AC ~ 300V AC (Ultra-Wide AC Grid Tolerance)
Cooling MethodBuilt-in Smart Speed Controlled Exhaust Fan
Power Conversion Efficiency≥ 94%
Power Factor & THD≥ 0.99 (Active Power Factor Correction)
Operating Temperature Range-40°C to +70°C

Applications

01

Wireless base station power frames (BTS/NodeB/eNodeB/gNodeB)

02

Central telecom exchange and optical transmission hubs

03

Substation and railway automation DC backup power infrastructures

04

Edge computing outdoor micro-data cabinets exposed to severe climate variations

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